vaccine needle

Abstract

The vaccine needle includes a housing, a needle tube, and a push assembly. The push assembly is located in the housing, and the needle tube is located at the end of the housing. The push assembly includes a main piston shaft, a limiting mechanism, an auxiliary piston shaft and a piston, and the auxiliary piston shaft is connected to the piston. , the limiting mechanism is located between the main piston shaft and the auxiliary piston shaft, and the limiting mechanism is fixedly connected in the casing, and a through hole matching the main piston shaft is formed in the limiting mechanism; Sensitive components and extrusion components; compared with the prior art, by setting the restricting mechanism, the main piston shaft needs to be aligned with the main piston shaft before the restricting mechanism can pass through, preventing the accidental push of the piston shaft and causing the loss of the vaccine solution, and the auxiliary The pushing process of the piston shaft and the piston is irreversible, and the positions of the auxiliary piston shaft and the piston cannot be restored. At the same time, under the action of the heat-sensitive component and the extrusion component, the needle tube is clamped when the temperature inside the vaccine needle exceeds the preset temperature, preventing the vaccine from being released. The liquid flows out through the needle.

Description

technical field [0001] The invention belongs to the technical field of vaccine needles, in particular to a vaccine needle. Background technique [0002] The safety of vaccines has always been a matter of great concern to people. Vaccine needles are a common medical consumable used for injection of vaccines. The design of vaccine needles is to combine vaccine bottles and injection syringes into one. The structure allows the vaccine solution to be directly contained in the barrel of the syringe. [0003] Because vaccines are sensitive to temperature, every link between the vaccine manufacturing department and the vaccine use site will be destroyed once the temperature exceeds 2°C to 8°C, and in the existing technology, it is usually impossible to detect during use The real-time temperature of the vaccine may cause overheating of the vaccine during injection, thus causing certain safety hazards to the user; at the same time, when the vaccine is placed in the vaccine needle, th...

AI Technical Summary

Problems solved by technology

[0003] Because vaccines are sensitive to temperature, every link between the vaccine manufacturing department and the vaccine use site will be destroyed once the temperature exceeds 2°C to 8°C, and in the existing technology, it is usually impossible to detect during use The real-time temperature of the vaccine may cause overheating of the vaccine during injection, thus causing certain safety hazards to the user; at the same time, when the vaccine is placed in the vaccine needle, the traditional vaccine needle accidentally pushes the piston shaft to cause the vaccine liquid to leak. loss

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